PINPOINT TEST G: DTCs B1355 AND B1359 - IGNITION RUN CIRCUIT FAILURE AND IGNITION RUN/ACC CIRCUIT FAILURE

WARNING: This page is about a different car, the 2010 Ford Pickup, 2010 Ford F550 Super Duty, 2010 Ford F450 Super Duty, and 2010 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

G1 CHECK THE IGNITION SWITCH
- Ignition OFF.
- Carry out the Ignition Switch Component Test.
  Refer to COMPONENT TESTING -- F250- F550 for component testing.
- Is the ignition switch OK?
- Yes: For DTC B1355, GO to G2 .
  For DTC B1359, GO to 4.
- No: INSTALL a new ignition switch. REFER to IGNITION SWITCH . CLEAR the DTCs. REPEAT the self-test.
G2 CHECK CIRCUIT CDC63 (YE/OG) FOR AN OPEN
- Disconnect: Ignition Switch C250.
- Disconnect: CDIM C2500.
- Measure the resistance between ignition switch C250-7, circuit CDC63 (YE/OG), harness side and CDIM C2500-1, circuit CDC63 (YE/OG), harness side.
  
  Fig 1: Measuring Resistance Between Ignition Switch C250-7 And CDIM C2500-1
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes: GO to G3 .
- No: REPAIR circuit CDC63 (YE/OG). CLEAR the DTCs. REPEAT the self-test.
G3 CHECK CIRCUIT CDC63 (YE/OG) FOR A SHORT TO GROUND
- Measure the resistance between ignition switch C250-7, circuit CDC63 (YE/OG), harness side and ground.
  
  Fig 2: Measuring Resistance Between Ignition Switch C250-7 And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes: GO to 6.
- No: REPAIR circuit CDC63 (YE/OG). CLEAR the DTCs. REPEAT the self-test.
G4 CHECK CIRCUIT CDC32 (BN/YE) FOR AN OPEN
- Ignition OFF.
- Disconnect: CDIM C2500.
- Disconnect: SJB C2280A.
- Measure the resistance between CDIM C2500-8, circuit CDC32 (BN/YE), harness side and SJB C2280A-4, circuit CDC32 (BN/YE), harness side.
  
  Fig 3: Measuring Resistance Between CDIM C2500-8 And SJB C2280A-4
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes: GO to G5 .
- No: REPAIR circuit CDC32 (BN/YE). CLEAR the DTCs. REPEAT the self-test.
G5 CHECK CIRCUIT CDC32 (BN/YE) FOR A SHORT TO GROUND
- Measure the resistance between CDIM C2500-8, circuit CDC32 (BN/YE), harness side and ground.
  
  Fig 4: Measuring Resistance Between CDIM C2500-8 And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes: GO to G6 .
- No: REPAIR circuit CDC32 (BN/YE). CLEAR the DTCs. REPEAT the self-test.
G6 CHECK THE CDIM CONNECTORS
- Check the CDIM connector for:
  - corrosion.
  - pushed-out pins.
  - spread terminals.
- Connect: CDIM C2500.
- Make sure the connector seats correctly, then operate the system and verify the concern is still present.
- Is the concern still present?
- Yes: INSTALL a new CDIM . REFER to CIRCUIT DEACTIVATION IGNITION MODULE (CDIM) . CLEAR the DTCs . REPEAT the self-test.
- No: The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.